The NEC defines a controller in a few different ways. In Art. 100, a controller is described as “a device or group of devices that serves to govern, in some predetermined manner, the electric power ...

ACHR News Content on Motor Starters, Magnetic Find manufacturers of Motor Starters, Magnetic in the HVACR industry of HVAC and refrigeration products.

The programmable logic controller (PLC) is a microprocessor-based system that accepts input data from switches and sensors, processes that data by making decisions in accordance with a stored program, ...

This article was updated May 15, 2023. It was originally published July 14, 2020. It often takes a lot of energy to get a motor up to speed. Across-the-line starters (DOL), the most common starter ...